Distance(cm) Elevation(cm) 0 13 2.5 13.2 5 12.5 7.5 12.8 10 12.5 12.5 12.6 15 12.7 17.5 12.2 20 12.2 22.5 11.9 25 11 27.5 11.8 30 11.7 32.5 11.7 35 12 37.5 12 40 12.2 42.5 12.2 45 12 47.5 11.5 50 13 52.5 12.2 55 12.2 57.5 11.9 60 12 62.5 12.1 65 12.7 67.5 12.5 70 12.8 72.5 12.7 75 12.7 77.5 12.5 80 12.4 82.5 13.4 85 11.8 87.5 12.8 90 12.8 92.5 12.8 95 12.4 97.5 11.9 100 12.3